Official forecasts from the Finnish Meteorological Institute and supporting European models currently project a July 1 maximum in Helsinki near 21–24 °C, with the spread reflecting modest run-to-run differences in boundary-layer mixing, cloud cover, and weak southerly flow. Ensemble guidance shows limited warm-air advection ahead of a transient ridge, keeping values close to the early-summer climatological mean of roughly 20–22 °C while still allowing brief excursions to 25 °C if daytime insolation is stronger than expected. Traders have therefore concentrated probability on the 23–25 °C outcomes because those thresholds capture both the central forecast and the realistic uncertainty range two days before the event, whereas probabilities drop sharply outside this band once model consensus and historical verification skill are considered.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedHighest temperature in Helsinki on July 1?
Highest temperature in Helsinki on July 1?
24°C 31%
23°C 21%
25°C 11%
26°C 11%
NEW
NEW
Jul 1, 2026
19°C or below
1%
20°C
1%
21°C
2%
22°C
9%
23°C
21%
24°C
31%
25°C
24%
26°C
11%
27°C
5%
28°C
2%
29°C or higher
1%
24°C 31%
23°C 21%
25°C 11%
26°C 11%
NEW
NEW
Jul 1, 2026
19°C or below
$10 Vol.
1%
20°C
$6 Vol.
1%
21°C
$11 Vol.
2%
22°C
$0 Vol.
9%
23°C
$8 Vol.
21%
24°C
$5 Vol.
31%
25°C
$9 Vol.
24%
26°C
$12 Vol.
11%
27°C
$46 Vol.
5%
28°C
$75 Vol.
2%
29°C or higher
$165 Vol.
1%
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 1 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official forecasts from the Finnish Meteorological Institute and supporting European models currently project a July 1 maximum in Helsinki near 21–24 °C, with the spread reflecting modest run-to-run differences in boundary-layer mixing, cloud cover, and weak southerly flow. Ensemble guidance shows limited warm-air advection ahead of a transient ridge, keeping values close to the early-summer climatological mean of roughly 20–22 °C while still allowing brief excursions to 25 °C if daytime insolation is stronger than expected. Traders have therefore concentrated probability on the 23–25 °C outcomes because those thresholds capture both the central forecast and the realistic uncertainty range two days before the event, whereas probabilities drop sharply outside this band once model consensus and historical verification skill are considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 1 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Market Opened: Jun 29, 2026, 12:03 AM ET
Volume
$339End Date
Jul 1, 2026Market Opened
Jun 29, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 1 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.Official forecasts from the Finnish Meteorological Institute and supporting European models currently project a July 1 maximum in Helsinki near 21–24 °C, with the spread reflecting modest run-to-run differences in boundary-layer mixing, cloud cover, and weak southerly flow. Ensemble guidance shows limited warm-air advection ahead of a transient ridge, keeping values close to the early-summer climatological mean of roughly 20–22 °C while still allowing brief excursions to 25 °C if daytime insolation is stronger than expected. Traders have therefore concentrated probability on the 23–25 °C outcomes because those thresholds capture both the central forecast and the realistic uncertainty range two days before the event, whereas probabilities drop sharply outside this band once model consensus and historical verification skill are considered.
This market will resolve to the temperature range that contains the highest temperature recorded at the Helsinki Vantaa Airport Station in degrees Celsius on 1 Jul '26.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
The resolution source for this market will be information from Wunderground, specifically the highest temperature recorded for all times on this day for the Helsinki Vantaa Airport Station, available here: https://www.wunderground.com/history/daily/fi/vantaa/EFHK.
To toggle between Fahrenheit and Celsius, click the gear icon next to the search bar and switch the Temperature setting between °F and °C.
This market can not resolve until the first data point for the following date has been published on the resolution source.
The resolution source for this market measures temperatures to whole degrees Celsius (eg, 9°C). Thus, this is the level of precision that will be used when resolving the market.
Revisions to temperatures recorded within this market's timeframe will be considered until the first datapoint for the following date has been published, after which any alterations will not be considered.
Volume
$339End Date
Jul 1, 2026Market Opened
Jun 29, 2026, 12:03 AM ETResolution Source
https://www.wunderground.com/history/daily/fi/vantaa/EFHKResolver
0x69c47De9D...Official forecasts from the Finnish Meteorological Institute and supporting European models currently project a July 1 maximum in Helsinki near 21–24 °C, with the spread reflecting modest run-to-run differences in boundary-layer mixing, cloud cover, and weak southerly flow. Ensemble guidance shows limited warm-air advection ahead of a transient ridge, keeping values close to the early-summer climatological mean of roughly 20–22 °C while still allowing brief excursions to 25 °C if daytime insolation is stronger than expected. Traders have therefore concentrated probability on the 23–25 °C outcomes because those thresholds capture both the central forecast and the realistic uncertainty range two days before the event, whereas probabilities drop sharply outside this band once model consensus and historical verification skill are considered.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated
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